:root {
    --bg-light: #f5f7fb;
    --bg-dark: #111827;
    --card-bg: #ffffff;
    --primary: #2563eb;
    --primary-soft: #dbeafe;
    --accent: #10b981;
    --text-main: #111827;
    --text-muted: #6b7280;
    --border-soft: #e5e7eb;
    --radius-xl: 18px;
    --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
    --transition-fast: 0.2s ease-in-out;
    --font-main: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-main);
    background-color: var(--bg-light);
    color: var(--text-main);
}

main {
    padding: 70px 16px 24px 16px;
    max-width: 960px;
    margin: 0 auto;
}

.card {
    background-color: var(--card-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-soft);
    padding: 16px 16px 18px 16px;
    margin-bottom: 16px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
}

.card-subtitle {
    font-size: 13px;
    color: var(--text-muted);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    background-color: var(--primary);
    color: #ffffff;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-fast);
}

.btn:hover {
    background-color: #1d4ed8;
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid transparent;
    cursor: pointer;
    background-color: transparent;
    color: var(--text-main);
    font-size: 14px;
    text-decoration: none;
    transition: var(--transition-fast);
}

.btn-ghost:hover {
    background-color: var(--primary-soft);
    border-color: var(--primary);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
textarea,
select {
    width: 100%;
    padding: 9px 10px;
    border-radius: 10px;
    border: 1px solid var(--border-soft);
    font-size: 14px;
    margin-top: 4px;
    margin-bottom: 10px;
    transition: var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-soft);
}

.label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.table th,
.table td {
    padding: 8px 6px;
    border-bottom: 1px solid var(--border-soft);
}

.table th {
    text-align: left;
    font-weight: 600;
    color: var(--text-muted);
}

/* mobile */
@media (max-width: 768px) {
    main {
        padding: 64px 10px 18px 10px;
    }
}